Admittedly, I don’t know that much about this, I just started fooling around with this tonight (via this post). As stated in said post, this works for only under x86 and AFAIK, needs at least Sql Server 2014 (I couldn’t find the required dll’s under sql 2012…). Edit 20170410: The 64 bit dll’s are located in ‘C:\Program Files\Microsoft SQL Server\120\Shared’ for sql server 2014. I’m assuming they’re in the 130 directory for Sql Server 2016.
$path = '\\ServerName\C$\MSSQL\MSSQL11.MSSQLSERVER\MSSQL\Log\AuditCapture_0_131300599577540000.xel'
#Add-Type -Path 'C:\Program Files (x86)\Microsoft SQL Server\120\Tools\Binn\ManagementStudio\Extensions\Application\Microsoft.SqlServer.XE.Core.dll'
#Add-Type -Path 'C:\Program Files (x86)\Microsoft SQL Server\120\Tools\Binn\ManagementStudio\Extensions\Application\Microsoft.SqlServer.XEvent.Linq.dll'
Add-Type -Path 'C:\Program Files\Microsoft SQL Server\120\Shared\Microsoft.SqlServer.XE.Core.dll'
Add-Type -Path 'C:\Program Files\Microsoft SQL Server\120\Shared\Microsoft.SqlServer.XEvent.Linq.dll'
$events = New-Object Microsoft.SqlServer.XEvent.Linq.QueryableXEventData($path)
$sb = New-Object System.Text.StringBuilder
$events | select -First 10 | %{
$event = $_
[void]$sb.Append("$($event.Timestamp);;");
for($i=0;$i-lt($event.Fields.Count-1);$i++){
[void]$sb.Append("$($event.Fields[$i].Value.ToString().Replace("`r`n", ''));;");
}
$event.Actions | %{
$action = $_
[void]$sb.Append("$($action.value.ToString().Replace("`r`n", ''));;");
}
[void]$sb.Append("ServerName;;");
[void]$sb.AppendLine();
}
$sb.ToString();
Sql Server Powershell 
There is now a better way to read XEvents in PowerShell. Microsoft releases an official module.
You can find it in: https://www.powershellgallery.com/packages/SqlServer.XEvent
Thanks,
Tomer (MSFT).
You can now use Read-SqlXEvent cmdlet which is part of the latest version of the SQLServer module. You can try it out from: https://www.powershellgallery.com/packages/SqlServer
Thanks, Tomer (MSFT).